If the internal organ were the agent, it would be such even in that final state of meditation, called samâdhi, which is the instrument of Release. But that state consists therein that the meditating being realises its difference from Prakriti, and this is a conception which Prakriti itself (of which the internal organ is only a modification) cannot form. The Self alone, therefore, is the agent. But this would imply that the activity of the Self is never at rest! Of this difficulty the next Sûtra disposes.